XML 97 R69.htm IDEA: XBRL DOCUMENT
v3.20.4

Defined Benefit Obligation and Other Long-Term Liabilities (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2020
Subclassifications of assets, liabilities and equities [abstract] |
Components of Defined Benefit Obligations and Other Long-Term Liabilities | The components of defined benefit obligation and other long-term liabilities are as follows:
As at Dec. 31 | 2020 | 2019
Defined benefit obligation (Note 31) | 282 |  | 268 |
Long-term incentive accruals (Note 30) | 4 |  | 4 |
Other | 12 |  | 29 |
Total | 298 |  | 301 |

X
- References No definition available. + Details
Name: | ifrs-full_SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Components of Noncurrent Defined Benefit Plan Liabilities and Other Long-Term Liabilities [Table Text Block] + References No definition available. + Details
Name: | tac_ComponentsofNoncurrentDefinedBenefitPlanLiabilitiesandOtherLongTermLiabilitiesTableTextBlock
Namespace Prefix: | tac_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration